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Does walking on the moon make life better for people on earth? (41) all the problems of our own world, why should we be spendi
Does walking on the moon make life better for people on earth? (41) all the problems of our own world, why should we be spendi
admin
2013-05-29
53
问题
Does walking on the moon make life better for people on earth? (41) all the problems of our own world, why should we be spending huge sums on trips to outer space? Such questions as these are often asked, especially (42) those whose tax money is paying for space explorations. The answers to these questions are many and varied.
Up to now, the practical benefits resulting (43) space research have included the development of new methods and skills, new processes, new services, new products, and even new companies created to make use of what (44) through space travel. Also among the benefits are better education (especially in scientific subjects), (45) management, higher quality of industrial products, and more rapid economic growth. People all over the world are now served by (46) weather predictions, better communication systems, and better understanding of the earth and its environment. Everyone will benefit (47) observations from space make it possible to measure the earth’s resources and (48) whether or not they are being used properly. (49) the space program will help our world deal with the problems of the environment. It has already brought a new appreciation of the complex system (50) man is only a part.
选项
A、has learned
B、has been learned
C、is learned
D、can learn
答案
B
解析
这句话的意思是:通过太空旅行所了解到的知识。要用被动语态的完成式。因此,B为正确答案。
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研究生英语学位课统考(GET)
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